Ryomen Sukuna is the main antagonist of Gege Akutami's Jujutsu Kaisen, a manga first serialised in 2018 and adapted into an anime in 2020. Fuga, meaning open, is the word he speaks to release his flame-based cursed technique, distinct from his slashing attacks Dismantle and Cleave. As the series grew popular, manga readers and anime fans isolated the single word as a recognisable cue on soundboards and in fan edits, where its brevity and the character's reputation make it instantly identifiable even out of context.